Could the future versions of the Business Directory Plugin allow the Listing owners to log into the BDP control panel, instead of the WP control panel, when they log in through wp-login.php
Perhaps the BDP control panel can have a few links such as
- View Listing
- Modify Listing
- Delete Listing
- WordPress Control Panel
Taking newbies straight to the WP c/panel when they log into the system might be a little confusing for them, especially when they are expecting to see the business directory listings.